Experimental Estimation of CLASP Spatial and Spectral Resolutions: Results of the Instrument's Optical Alignment

The Chromospheric Lyman-Alpha SpectroPolarimeter is a sounding rocket experiment design to measure for the first time the polarization signal of the Lyman-Alpha line (121.6nm), emitted in the solar upper-chromosphere and transition region. This instrument aims to detect the Hanle effect's signa...

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Published inNASA Center for AeroSpace Information (CASI). Conference Proceedings
Main Authors Giono, G, Katsukawa, Y, Ishikawa, R, Narukage, N, Bando, T, Kano, R, Suematsu, Y, Winebarger, A, Kobayashi, K, Auchere, F
Format Conference Proceeding
LanguageEnglish
Published Hampton NASA/Langley Research Center 01.01.2015
Subjects
Chromosphere
Design of experiments
Polarization
Spicules
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Summary:The Chromospheric Lyman-Alpha SpectroPolarimeter is a sounding rocket experiment design to measure for the first time the polarization signal of the Lyman-Alpha line (121.6nm), emitted in the solar upper-chromosphere and transition region. This instrument aims to detect the Hanle effect's signature hidden in the Ly-alpha polarization, as a tool to probe the chromospheric magnetic field. Hence, an unprecedented polarization accuracy is needed ((is) less than 10 (exp -3). Nevertheless, spatial and spectral resolutions are also crucial to observe chhromospheric feature such as spicules, and to have precise measurement of the Ly-alpha line core and wings. Hence, this poster will present how the telescope and the spectrograph were separately aligned, and their combined spatial and spectral resolutions.